Shock absorber



L Si. LANGS SHOCK ABSORBER Original Filed Sep. l2 i922 To a-ZZ whom may concem Be it known that JAB/ms S., Limo, of Watertown, in the county of Mddesex ond State of Massachusetts, e citizen of the United States, have invene e new eine. useful improvement in Shock Absoibers, es which the foiiowin, is e foil, dem, emi exact descriptiona reerence being hed iso the accompanying drawings in expieinieg im nature.

The presei; invention beome izo vee?, oiess of shock absorbers vvhie me espeeieiy adapted for moor vefiileee, emi iai which the force required to pese e ud tiioegh e, restricted opening ie utilized eo prevent exfion.

The invention een bes; oe seen end 'ondesqu stood oy reference to the drawings in Whieh e shock absorber embodying he invention is shown, and in Whie1 Figure l is e medial vertical cross seetion.

Fig. 2 is ehorizontel section on he line 2 2 of Fig. 1.

Fig. 3 is e sectonof e, porion of the exterioz.' casing and View of the interior shaft bearing.

Fig; e is e. section of'e portion of the em terior casing :md View of the inteioi shaft bearing et right :aigles to that shown in gig.v 5 `is e vertical vsection of e' detei of construction to which reference will iaer be made.

Referring' io the drewngsz l represents e Casing having e removable Gevel-2. Projecting laemilyrom the oo"- ing are lugs or ears 3 by which imey be se cured to the body or iemeweri: of e veh cle. @n the inside the seeing ie provifed. with spaced bearings 4f for e sock fsiet later to be referred to. Theinterior of zhe easing is also provided with various, mim bess or petitions 5, respectvey, win-eh provide within't e. compression eiiemoei' 8, and outside this chamber mmedeeyfedjw een?, thereo a 'seconezfy e? expansion. eiev ber wih openings 'between the two bers, 'elein of me per/Wiens eseielingg in the veiveiei' conioio seii seeming@ liese ie eis@ provided bridging member l@ ee;- l

ing es e :suppose eed scotp oi e. veve mess: to be memioned. f

The easing 'lionne eeeepeoe *for ei een eineii Wiein ise iespeofbive chambers and meiiiteined Wihin the easing ee einem che evei ieieee e: l, @ii is iuroduce im@ fie seeing iie oop by wey o ehe iniea 3 5/ closed by the iing ping 13. he ooom iio easing ie ziievified with ouief openings le and l5. hese openings provide ouiei'zs for the oi emi aise openings 'through which ehe @ms above may be meoi'iine and fhough whc'i Qeisein the vsoing parte may Je imroouced ini@ ne 'Ehe opening is dosed iy bhe ping o? bmmee 18. Smoueding the opening' le like easing is extendeai or; form en exfeiio'y 'Eivleded sieeve i7 *epoxi which is ziieeded eyiiidii oei subcesmg i8 having its leweem oeeed 23? the ping; or bonnet 113A K The eompessoz'i ehemoee is within e cyiner oi'mefi by he eo-opeietiom of the vvzx or pertiioe Wih he We'is of the easing. Contained to reomfocefe Wihin the cylinder is e piegoil 20., fha piston is psc vided` with interim' cheeks 21 Wibein which siv pim is 'zied o arose Sie space beween tie cheeks. Pivofeijf seoused to the pin is e link 23 which is eeo pvotaliy seemed to e pin 26% ixed im the speced ends of e rocker erm 26. The Focke? eem 26 is provided with e hui; 2? secured to e rook shaft 28 which turns wihin the spaced hearings 4; in the casing above reeme to, the hub 2T occupying space bevseen the 'beezfine The heb 2? is aszene upon shaft y means of the key 29 which is ieif {Jightiy im@ ies keywey by ehe pressure of the sei sosew 3l upon the tighening Wedge 3Q The seiew 3i is prevented from ioosening by the loci: Weshei 32 and sioted iode-- in screw Ether zeye. 'upon the otite? end of die shaft 28 or eoisrueze; ietegg'eiy therewih is en exteme eee'fer 3e provided with e, beii for fp eeei end socket conf neoion eey .lebe means (noi shown? for eonneczi so Hee ersie of finie vehioe Wh eiis eA. memeii et" pe'e ii: wi ioe seen my one efe in be semi-:ive poe veiiee fi" 'me o* 'body in siie ireeffffvey will ac:

ESC

am' n izo move; the piston 20, Wiiich is miseri or iowered in the cylinder as the cose may be.

Referring new to the means for controiling the passege of oil between the compression clieinber 8 ond ille seeoneiery or expension chamber il: The periiiion or well in the easing extends beneath elle cylinder conmining the compression clieinber and forms the bottom woll of this cliember. TNithin the partition Z et the lower end of rile cylinder is located :in opening 36 between the compression chamber and the secondary chamber which, as shown in Fig. l, entends beneath the compression chamber. r)This opening is controiied by e veive having e, circular dise 37 centralized with reference to the opening by suiigable guiding iins 3?. The valve is controlled by springs 88, 39, the spring 38 being; e light, spring end the spring 39 much heavier. in its normei posiion the dise 37 fills the opening,l 36 es shown in Fig; i; A slight excess of liquid pressure in chamber 9 over the pressure in chamber 8 Will reise the (lise 37 opening che passageway and compressing ille light spring 38, and conversely e heavy pressure in the pressure chamber 8 will lower the disc 3?" opening the passageway, aiiowing en escepe of liquid from the chamber and coinpressing the 4liervy spring 39. The valve dise 37, therefore, perincs of e relatively free iiov? of iuid from the secondary ehem ber inte the cyiinder whenl the piston is raised, but prevents the passage of iuid through. faire opening when the piston moves in e reverse direction except es e heeey pressure when sueii 'passage is permitted.

The partitions 6 and 7 cooperate Wiiiii one another to form en extension 4) from 'i'.ne lower end of the compression cherocer., The briciging supporre i@ end lie per-v ri-ione 5 emi *i ere bored provisie ein oueie; from the compression ci'xember' by wey of openings 4QF, 40' oppositeiy errori ed sind which receive vviiii o ending iii 'e ey indricei veive 4i, eine here of partitions 6 end 7 erounei eine opening 4?, 40 forming ,is volvo seeting. The valve 4iie provided with e hoiow eyiindricei s aces-2 forming e passageway for the trans erence or li ui ,from the compression space to the secon ery chamber, and vice verse. Ports 43, 44,. 45 end 46 ore bored through the cylindrical Willis of elle valve., By means of these por-rs f the pessege of the Huid is controlled as the movement of the valve elies piece. In order that tile volve iney be free from frio sion enel in periiee; lesiones tvie ports 4B, 44, 4e enei 46 ere specel equally around the circumference ei die valve. The ports 46 ere only provided in cese it .is desired that the movement of iaixe veive 'be iniience. by sire iseon shrongii 'die iiovv 'of iiqoid in Winer cese sire combined eres pores 45 and 4e 'fnen fines oil" Ein meneer iis normal position esy shown in Fig.,i l there is free communication between the compression specs 8 and the secondary ciiemoer 9 by Way of the Wide open ports 43, ehe interior space 42 and Lire ports 44, 45 and 46. When tile oil passes from the compression chamber 8 to ille secondary chamber entering the valve through ports 43, its path is divided in the velve space 42, one portion passing ont by way of ports 44 and the other passing out by Way of ports 45 and 46. The edge 47 et the upper surface of pertiion i' forms e working valve edge iny connection with the ports 43, closing the ietter when the valve is depressed and opening them when the veive is reiseei,

The valve is extended at' its upper .end to forni e spindie 41 which is shouldered to receive o Weighs 48 estenefi n on it by ineens of e lock nui, 49 lireedeci tliereorn In order ro introduce she weight into the casing the letter is provioied with an openn ing sufiieienly ierge for the purpose, normally covered a cover plete 50, after 'which the vnaive is inserted from below ilirongii opening i5. Ai; ihe lower end of the valve tire cavity 42- is closed by e taper yping 5i, which 'is else adapted io, receive lie end off' e supporting spring 52. The iovverenei ei the spring 52 1s reteineoi in e suite'ble socket formed in the Weighted sup pore 533, thereby snpporing the velve endits etigeciied Weie'iit in its normei position es shown. The valve and its aetaoiieii weight snppore in a state of boienee upon its sur porting spring 52 is -ree io move in e'versi oei direction in response to such forces es may be brougiie to beer upon in A stop to imit sire n ewerd movement of the valve einer it iles passed its ui open position is proviclec by the valve eenling into coneeet with the lower side or bridging su port 10. A stop is also provideci to iiinit t'. e down- Werd movemen or ehe valve efter it has passe. its closes@ position, by the Weiehi; 48 coming into contact with tiieupper side of bridging sn 'poril 10. D

The Weig eed snppore 53 iseiso adopted so receive the upper euri of a, supporting spring 54 elle lower enel of which is retained by e suite'ble seating in the inside of ciosin plug 19, iiereby supporting the Weigi'ite supper-; 53 emi the veive Wien irs etiieched Weight in elle norniei pesicion es shown. The Wei-lire@ supper?, 53 carries ei; ies upper venei gering: nous 55 which slide Within' the ioore of tlie'sleeve 1'? sind is entendei et ies ioiver enri io forni e sieeve 56 slidebiy iittin the interior bore of ce 19., The Weights support 53 being thus old in'alignmen; oy

the ne 55 en the sleeve 56 and supported ey the spring 54 in e stette of hele-nce, is free to move in e verbieei direction in response to such folies es iney be brought to beer upon ifs. A seep ioiirnir, the upward movement with the lewe? and 0f sim to imi the dowmwmd mfvmm G 5 53 is provi-dad by a, owe suffi/1U "weigae suppm 53 @owing 'with he uppex en@ o the plug The Valves H and its Mache may be considered as une wi l 10 the e'mects 'of their neria, stated is @pan im its normfz and closed when fepz".

Maasai gagerheutagaiust the upper sides of its bear- 1' "03s. 1

'7. uid check shock absorber for coutrolling the movement of relatively movable pargtsthe. combination comprising an elemehtettachable to one of said parts and haviug fluid-containing pressure chamber audtside the same a secondary chamber with `an outlet from said pressure chamber into said secondary chamber and also a port between said chambers, a piston attachable v tu the other of said parts and reciprocable 'iisaid'pressure chamber, a valvular mech; ensinfcontrolling said outlet to throttle the passa e of luid therethrou h in a manner where y the movement of the piston in one direction will be impeded, a valvular mechanism controlling said port to permit of the free entry of huid from the secondary chamber into the pressure chamber when the piston moves in one direction and to permit of the passage of fluid through said port out of the pressure chamber upon a reverse movement or the piston only when the iuid. has become compressed therein by the piston in a determinate amount.

` 8. lx1 a uid check shock absorber for eou trolling the movemeut of relatively movable parts, the combination comprising an elen ment attachable to one of said parte and having a Huid-containing pressure Chamber e and outside the f same a secondary chamber with an outlet from said pressure chamber into said secondary chamber and also alport between said chambers, a pistou attachable to the other of said parts andreciprocable in said pressure chamber, a valve controlling said outlet, means for supporting said valve whereby it may throttle the passage of iuid therethrough out of the pressure chamber iii a marmer whereby the movement of the piston in one direction will be impeded a valve controlling said port, `and means for supporting and arranging said last-named valve to close said port or pass therethrough and open in reverse directions permitting of a free passage of duid into said pressure chamber as the piston moves in one direction and of the passage of fluid out of said pressure chamber upon a reverse movement of the piston only When the iluid has become compressed therein by the piston in a determinate amount.

aaa/iss s. Laue'. 

